GitLab

(help-xref-mule-regexp): Don't use defconst for variables.
(help-setup-xref): Keep the last 10 elements of the stack.
(help-xref-override-view-map): New var.
(help-make-xrefs): Use it instead of building a new map each time.
(help-function-def): Allow help-fun to take a buffer as arg.